Artemis II's toilet is a moon mission milestone
Reliable toilets emerge as a surprisingly critical technology for long-duration human spaceflight in light of Artemis II’s upgraded waste management system. Commenters note that managing human waste in microgravity is both technically hard and medically vital, citing past Apollo and shuttle-era failures, aerosolized fecal risks, and the need to design around zero‑G rather than adapt Earth toilets. The conversation uses historical anecdotes, ISS and shuttle designs, and even live troubleshooting from the Artemis II stream to argue that unglamorous systems like plumbing are a better test of mission seriousness than high‑profile propulsion or heat shield work.
Role of Toilets in Space Missions
- Toilets are framed as a core enabling technology for serious human spaceflight, not an afterthought.
- Several comments treat toilet design as a litmus test (“brown M&M clause”) for whether a crewed program is realistically engineered.
- Human waste is described as hazardous in a sealed microgravity environment: risk of aerosolized feces causing infection, eye damage, equipment faults, and potential mission failure.
Engineering and History of Space Toilets
- Early Apollo systems are characterized as “engineering-success / user-experience-failure”:
- Fecal bags were time-consuming (tens of minutes), skill-intensive, and prone to spills.
- Suit design (rear flap) and need to knead germicide into bags made the process unpleasant and risky.
- Shuttle and ISS toilets use suction and mechanical systems (e.g., spinning tines, compacting nets) with replaceable containers; malfunction scenarios are likened to a “poop snow globe.”
- Backup “Apollo bags” still exist; earlier shuttle systems required commanders to periodically compact waste, considered very stressful.
- Prior systems often depended on separating solid and liquid waste, which some astronauts (especially women) found difficult; Artemis’s toilet reportedly handles both together.
Artemis II Toilet Issues
- During Artemis II testing, the toilet initially failed to move waste into collection bags, triggering extensive troubleshooting with a dedicated “toilet lead” and procedures.
- Resolution involved a power cycle, prompting humor about “turning it off and on again” and “ejection” messages on the NASA stream.
- Some see this as evidence of serious, real-world engineering; others are frustrated by the lack of technical detail in the article.
Human Factors, Training, and Culture
- Microgravity makes defecation mechanically hard; gravity’s absence magnifies small design annoyances into major problems.
- Suggestions and debates include: two-person assistance, robot arms, catheters, diapers, and even centrifuge toilets; many are rejected as uncomfortable or impractical.
- Simulating the problem on Earth is hard: parabolic flights give only ~30 seconds of zero-g; neutral buoyancy is limited.
Broader Reflections and Critiques
- Commenters link waste management to municipal plumbing on Earth and global sanitation gaps.
- Some criticize spending on space toilets while many people lack basic toilets; others argue astronauts are not “elite” and space budgets are modest compared to other industries.
- Multiple comments generalize: all life and even machines produce “waste” (entropy), so waste management will always be a central engineering problem.